Effects of La2O3 on Microstructure and Properties of Laser Clad Fe-Based Amorphous Composite Coatings

Authors :: Xin Mian Li
Li Jun Xiao
Zhi Qiang Shi
Qing Long Lu
Zhi Guo Yu
Yan Fang Wang
Source :: Materials Science Forum. 749:583-588
Publication Year :: 2013
Publisher :: Trans Tech Publications, Ltd., 2013.
Abstract: The Fe-Cr-Si-P amorphous powder with various La2O3contents was cladded on 304L substrates by laser technology. The effects of La2O3contents on microstructure and properties of the coatings were investigated. The results showed that the coating mainly consisted of amorphous, Fe3P and Fe2Si phases. A small amount of La2O3addition could inhibit the epitaxial growth, and refine the dendrite crystals. When the content of La2O3was 0.1%, the amorphous content of the coating was up to about 55%, and the maximum microhardness was about 900HV0.2.

Subjects :: Materials science
Mechanical Engineering
Metallurgy
Composite number
engineering.material
Condensed Matter Physics
Microstructure
Epitaxy
Laser
Indentation hardness
Amorphous solid
law.invention
Dendrite (crystal)
Coating
Mechanics of Materials
law
engineering
General Materials Science
Composite material

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